CadillacAnother American brand that's among the most expensive to maintain is Cadillac. One of the oldest luxury automakers in the world, Cadillac currently has a wide range of SUVs available, but still has options for anyone looking for a sedan that blends luxury and performance with the CT4 and CT5 models. One area where Cadillac is expanding more aggressively than some of its rivals Stateside is electrification. While GM is no longer targeting an all-electric lineup for the brand by 2030, with the Lyriq, Optiq, Vistiq, and Escalade IQ all aiming to benefit from what all-electric powertrains can bring to the luxury segment.Since these models are relatively new, it's still difficult to gauge their long-term reliability. However, there's no shortage of data regarding the existing Cadillac models that still feature in the lineup or have been discontinued, such as the CT6. While luxury and performance set Cadillac apart, repair costs and overall maintenance are one of the brand's weaker points, with CarEdge estimating that you'll pay $11,086 on maintenance costs over 10 years. Yearly costs remain closer to those of brands like Ford, at $783 according to RepairPal.ChryslerAnother brand under the Stellantis banner, Chrysler is a unique entry on this list in that it only produces minivans. You have a choice between the Voyager and the Pacifica, the latter of which is also available as a plug-in hybrid model. A few years ago, Chrysler was a more diverse brand with models such as the 300 sedan, but that was discontinued in 2023. The smaller Chrysler 200 was also discontinued earlier in 2017.While the current lineup is focused on one segment of the industry, the discontinuation of some of the brand's key models provides ample data on how dependable the distinguished automaker is in both the short and long term. RepairPal's predicted annual maintenance cost of $608 puts Chrysler below other many major American brands, but costs start to increase over time. After 10 years of ownership, a Chrysler will cost you $11,367, according to CarEdge's data. Problems that owners have faced with their Chrysler cars include issues with the transmission — a complaint seen across multiple different models from the brand.Mercedes-BenzMercedes-Benz has been a leader in the luxury segment for decades. In 2025, the German brand offers a generous choice for SUVs, sedans, and performance coupes to be as competitive as possible in the same segments as its key rivals, with cutting-edge technology throughout the cabins and drivetrains. While these features go a long way in offering the most luxurious experience, they open the door for specific problems that, when they do need to be fixed, can cost more than other major automakers that don't require specialized service.As a luxury brand with rather high starting prices, Mercedes-Benz cars are also naturally more expensive to maintain overall, with RepairPal reporting an average maintenance cost of $908 per year. The puts Mercedes-Benz at 27th out of the 32 brands RepairPal studied for reliability. Long-term maintenance costs, unfortunately, don't have a better outlook, with CarEdge estimating a 10 year cost of $12,962 to keep the already-expensive luxury cars running smoothly.